On Fri, Oct 2, 2020 at 1:41 AM Jason Gunthorpe wrote:
> On Thu, Oct 01, 2020 at 10:16:35PM +0200, Jann Horn wrote:
> > > A subclass isn't right, it has to be a _nested annotation.
> > >
> > > nested locking is a pretty good reason to not be able to do this, this
> > > is something lockdep does
On Thu, Oct 01, 2020 at 10:16:35PM +0200, Jann Horn wrote:
> > A subclass isn't right, it has to be a _nested annotation.
> >
> > nested locking is a pretty good reason to not be able to do this, this
> > is something lockdep does struggle to model.
>
> Did I get the terminology wrong? I thought
On Thu, Oct 1, 2020 at 9:15 PM Jason Gunthorpe wrote:
> On Thu, Oct 01, 2020 at 01:51:33AM +0200, Jann Horn wrote:
> > On Thu, Oct 1, 2020 at 1:26 AM Jason Gunthorpe wrote:
> > > On Wed, Sep 30, 2020 at 10:14:57PM +0200, Jann Horn wrote:
> > > > On Wed, Sep 30, 2020 at 2:50 PM Jann Horn wrote:
On Thu, Oct 01, 2020 at 01:51:33AM +0200, Jann Horn wrote:
> On Thu, Oct 1, 2020 at 1:26 AM Jason Gunthorpe wrote:
> > On Wed, Sep 30, 2020 at 10:14:57PM +0200, Jann Horn wrote:
> > > On Wed, Sep 30, 2020 at 2:50 PM Jann Horn wrote:
> > > > On Wed, Sep 30, 2020 at 2:30 PM Jason Gunthorpe wrote:
On Thu, Oct 1, 2020 at 1:26 AM Jason Gunthorpe wrote:
> On Wed, Sep 30, 2020 at 10:14:57PM +0200, Jann Horn wrote:
> > On Wed, Sep 30, 2020 at 2:50 PM Jann Horn wrote:
> > > On Wed, Sep 30, 2020 at 2:30 PM Jason Gunthorpe wrote:
> > > > On Tue, Sep 29, 2020 at 06:20:00PM -0700, Jann Horn wrote:
On Wed, Sep 30, 2020 at 1:15 PM Jann Horn wrote:
> On Wed, Sep 30, 2020 at 2:50 PM Jann Horn wrote:
> > On Wed, Sep 30, 2020 at 2:30 PM Jason Gunthorpe wrote:
> > > On Tue, Sep 29, 2020 at 06:20:00PM -0700, Jann Horn wrote:
> > > > In preparation for adding a mmap_assert_locked() check in
> > >
On Wed, Sep 30, 2020 at 10:14:57PM +0200, Jann Horn wrote:
> On Wed, Sep 30, 2020 at 2:50 PM Jann Horn wrote:
> > On Wed, Sep 30, 2020 at 2:30 PM Jason Gunthorpe wrote:
> > > On Tue, Sep 29, 2020 at 06:20:00PM -0700, Jann Horn wrote:
> > > > In preparation for adding a mmap_assert_locked() check
On Wed, Sep 30, 2020 at 2:50 PM Jann Horn wrote:
> On Wed, Sep 30, 2020 at 2:30 PM Jason Gunthorpe wrote:
> > On Tue, Sep 29, 2020 at 06:20:00PM -0700, Jann Horn wrote:
> > > In preparation for adding a mmap_assert_locked() check in
> > > __get_user_pages(), teach the mmap_assert_*locked()
On Wed, Sep 30, 2020 at 2:30 PM Jason Gunthorpe wrote:
> On Tue, Sep 29, 2020 at 06:20:00PM -0700, Jann Horn wrote:
> > In preparation for adding a mmap_assert_locked() check in
> > __get_user_pages(), teach the mmap_assert_*locked() helpers that it's fine
> > to operate on an mm without locking
On Tue, Sep 29, 2020 at 06:20:00PM -0700, Jann Horn wrote:
> In preparation for adding a mmap_assert_locked() check in
> __get_user_pages(), teach the mmap_assert_*locked() helpers that it's fine
> to operate on an mm without locking in the middle of execve() as long as
> it hasn't been installed
In preparation for adding a mmap_assert_locked() check in
__get_user_pages(), teach the mmap_assert_*locked() helpers that it's fine
to operate on an mm without locking in the middle of execve() as long as
it hasn't been installed on a process yet.
Existing code paths that do this are (reverse
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